Plug or cover for boilers.



No. 721,955. PATENTED MAR.- 3, 1903.

W. M. JACKSON. PLUG 0R COVER FOR BOILERS.

APPLICATION FILED AUG. 12, 1902.

N0 MODEL.

flu-neuter, I q vihwqaeo v UNITED STATES PATENT OFFICE.

WILLIAM M. JACKSON, OF NEW BRUNSWICK, NEW JERSEY.

PLUG OR COVER FOR BOILERS.

SPECIFICATION forming part of Letters Patent N 0. 721,955, dated March 3, 1903.

Original application filed October 4, 1901, Serial No. 77,536. Divided and this application filed August 12, 1902. Serial (N0 model.)

To all whom it may concern.-

Be it known that I, WILLIAM M. JACKSON, a citizen of the United States, residing at'New Brunswick, MiddleseX county, State of New Jersey, have invented a new and useful Improvement in Plugs or Coversfor Boilers, of which the following is a specification.

My invention consists of an improvement in water-tube boilers wherein I provide an opening adjacent a header thereof and removable means for closing said opening, the same being a division of my application for Patent filed October 4, 1901, Serial No. 77,536.

It further consists of novel details of construction, all as will be hereinafter set forth.

Figure 1 represents an elevation of an end of a boiler embodying my invention. Fig. 2 represents a perspective view of a plug or cover employed. Fig. 3 represents a partial side elevation and partial sectional view of a plug or cover.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates the steam and water drum of a boiler, which is suitably supported and which communicates with suitable water-tubes, (not shown,) which are situated within a suitable compartment, the latter being provided with the usual firegrates, baffle-plates, &c., which construction forms no part of the present invention, and a further description thereof is deemed unnecessary at this time. It will be understood that said compartment is formed by suitable masonry B and that the'front end of the compartment is provided with the suitable headers or closures C; and adjacent the same are the openings D, said openings being closed by plugs or covers E, which in the present instance are situated between the walls of the compartment and sides of the water tube headers, it being of course apparent that-I may only provide one opening and that I may place the same at any desired point. F designates a suitable handle which is secured to said plug or cover for engagement, whereby said plug or cover can be removed or inserted in the opening, the latter being also provided with a suitable packing G to prevent the cscape of the products of combustion, while, if

desired, I may provide the plugs or covers with a suitable flange II for evident purposes.

J designates a spring which is suitably secured to the plug or cover and maybe of any construction, providing that it performs the function of holding or assisting in holding the plugs or covers in position.

In Fig. 3 I have shown the packing as situated within an annular groove in a plug or cover, although it will be apparent that said packing can be held on said plugs or covers in any suitable manner.

From the above it will be readily seen tha by removing one of the plugs or covers suitable means or devices can be inserted through the opening and into the compartment for the purpose of cleaning the water-tubes and that after the accomplishment of this end the plugs or covers can be placed in position, forming a perfect closure.

It will be evident that various changes may be made in the art which may come within the scope of my invention, and I do not,therefore, desire to be limited in every instance to the exact construction as herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A water-tube boiler having an opening adjacent its header, a removable cover for said opening, a packing on said lug or cover and means on said cover, whereby the same can be engaged for the removal and insertion of said cover.

2. A water-tube boiler having an opening adjacent its header, a removable cover for said opening, means on said cover adapted to engage with the header for holding the said cover in position,and a flange extending from said cover for preventing the egress of the products of combustion.

3. A water-tube boiler having an opening adjacent its header, a removable cover for said opening, and means secured to said cover and adapted to engage with a suitable portion of the header for holding said cover in position.

4. A water-tube boiler having an opening adjacent its header, a plug or cover for said opening, a packing on said plug or cover,and means on said plug whereby the same can be engaged for the removal and insertion of said plug or cover.

5. A water-tube boiler having an opening adjacent its header, a plug or cover for said opening having a handle and a packing for preventing the egress of the products of combustion,the said opening being adapted,when said plug or cover is removed, to admit of the [O insertion of a cleaning device.

WILLIAM M. J AOKSON.

\Vitnesses:

' JOHN A. WIEDERSHEIM,

WM. OANER WIEDERSHEIM. 

